Question

Angles of a triangle are (x-5), (x+15), and (2x+30) degrees.Find the angles

Answer 1

sum of angles of triangle = 180°

so

x-5+x+15+2x+30 = 180

4x = 140

x= 35

angle 1 = x-5 = 30°

angle 2 = x+15 = 50°

angle 3 = 2x + 30 = 100°

Answer 2

x-5+x+15+2x+30=180

or,4x+40=180

or,4x=180-40

or,x=140/4

or,x=35

1st angle=(35-5)°=30°

2nd angle=(35+15)°=50°

3rd angle=(2×35+30)°=100°

The angles are 30°,50°,100°.